Engine



June 2, 1. 5. YOUNG 1,807,721

ENGINE Original Filed April 2, 1927 2 Sheets-Sheet l June 2, 1931. G. YOUNG 1,807,721

ENGINE Original Filed April 2, 1927 2 Sheets-Sheet 2 gwventom Jim 6721 0112 29 Patented June 2, 1931 UNITED STATES Inns G. urs. or Lemma QJIPAEQMA.

ENGINE;

Application filed April 2, 1927, Seria1 The present invention relates to internal combustion engines and more particularly to internal combustion engines of the type employing a crude oil or a mixture of crude oil and gasoline as a fuel.

The primary object of the invention is to provide means for insuring against the paraffin and hot oil which may pass the rings of the piston, finding their way into the crank' casing to impair the efficiency of the lubricating oil.

A further object of the invention is to provide a piston having inclined grooves formed in the face thereof, the grooves being so arranged that they will collect the oil or paraffin passing the rings and deposit this foreign matter in an auxiliary manifold disposed laterally of the cylinder and at a point an appre ciable distance above the crank casing.

A still further object of the invention is to so construct the auxiliary manifold that the foreign matter will be returned to the intake manifold and directed to the cylinder for firing.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the, precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings:

Figure 1 is a side elevational View of an internal combustion engine supplied with a device constructed in accordance with the invention.

Figure 2 is a sectional view taken on line 22 of Figure 1.

Figure 3 is a vertical sectional View through a cyclinder taken at right angles to Figure 2.

N0. 180,546. Renewed April 20, 1931.

Figure 4 is a sectional view taken on line" H of Figure 3, the piston only being shown.

Referring to the drawings in detail, the reference character 5 designates an engine block, which is of the usual and well known construction. The engine cylinders forming a part of the block are provided with openings 6 disposed at points intermediate the ends of the cylinders, which openings communicate with the auxiliary manifold 7 that has an extension 8 that in turn communicates with the intake manifold 9 of the engine to direct foreign matter such as parafiin and unburnt oil, to the intake manifold to be again passed into the cylinders for firing.

The pistons operating in the cylinders form. important features of the invention, each of which includes a body portion 10 provided preferably with upper rings 11 and lower rings 12 so that should parafiin or unburnt oil escape from the grooves of the pistons, to be hereinafter more fully described, they will be held above the rings 12, to the end that eventually such paraflin and oil may find its way to the auxiliary manifold.

The grooves which are formed exteriorly of the pistons 10 are indicated by the reference character 13 and as shown are inclined from points adjacent to one side of each piston to points adjacent to the opposite sides thereof, the grooves being superposed and communicating so that material entering any groove will find its way to the lowest point of the lowermost groove, where it will be directed to the openings 6.

These grooves also extend from points adjacent to the upper rings to points adjacent to the lower rings, and in view of the fact that the lower ends of the grooves are disposed adjacent to the openings 6, it will be seen that unburnt oil and paraflin may find their way into the openings, from where they will be passed to the auxiliary manifold, and be carried or returned to the engine cylinders through the usual intake manifold with the incoming charge.

I claim In an internal combustion engine, cylinders having openings arranged intermediate the ends thereof, an auxiliary manifold secured adjacent to the openings for receiving material from the openings, pistons operating in the cylinders, said pistons having curved grooves formed in the outer surface thereof, said grooves being substantially narrow at their upper ends and widened throughout their lengths, and said grooves adapted to deliver material to the openings and manifold.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature.

IDUS G. YOUNG. 

